Below are the Lyman specifications for the All-American Perma Center 4X scope as listed in Lyman catalogs and source materials (1977 - 1985)

Magnification: 4X

Field of View: 30ft

Tube Diameter: 1 inch

Eyepiece Diameter: 1.440 inches

Objective Diameter: 1.440 inches

Eye Relief: 3.5 inches

Length: 12 inches

Weight: 10 ounces

Adjustments: 3/4 MOA click (though I have seen earlier Perma Center ads stating 1/2 MOA clicks)

Crosshair Options: #3 Center Range, #4 Center Range, #5 Post and Crosswire, #6 Tapered Post, #7 Standard Crosswire, 4 Minute Dot, 3 Minute Dot, 2 Minute Dot

Original MSRP: $54.50 (1962)

Inflation-Adjusted MSRP (2026 Dollars): $600.00

Additional Features: permanently centered reticule, later iterations nitrogen processed.

Reticle offerings for the 4X taken from the source materials of a Lyman 10X SL (1977 - 1985)